# 5.1.9. Future Gold Blocks Sometimes a block may be created but gets rejected by other nodes because consensus is not reached. These blocks are referred to as orphan blocks. It is a common occurrence that is caused by two Future Gold wallets staking the next block at almost the same time. The Future Gold wallet works by sending a message to other nodes informing them that you staked the next block. If the other nodes already received a similar message from a different Future Gold wallet earlier, the nodes will reply that it is too late. Your Future Gold wallet will mark the block as an orphan block. You can identify an orphan block on the transaction tab of the Future Gold wallet. They are normally light green as opposed to a darker green and they have a question mark icon beside them indicating that the other nodes did not confirm them on the blockchain. The average occurrence of orphan blocks is around 3%. This is attributed to the short block time. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.futuregold.us/ai-arbitrage-trade-system/5.-technical-details/5.1.-blockchain/5.1.9.-future-gold-blocks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.